If you are working with ASP.NET AJAX controls and encounter "Object Expected" error when using ValidationSummary and ModalPopup. The quick fix for this is to put your ModalPopup declaration at the top before any ValidationSummary controls in your page.

I was playing around with CSS and ASP.NET AJAX Modal Popup Control and wanted to have a popup that has a rounded corner outer shadows on it without using images. After searching the web for an existing solution I found this link and tried to apply it on my modal. Luckily I was able to make it work. Here's the whole code for my experiment: 1: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml... 2: <%@ Register Assembly="AjaxControlToolkit" ......

In my previous post here we've talked about how to calculate the sub-totals and grand total in GridView using JavaScript. In this post I'm going take more step further and will demonstrate how are we going to format the totals into a currency and how to validate the input that would only allow you to enter a whole number in the quantity TextBox. Here are the code blocks below: ASPX Source: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml... ......

There are times that we need to set the border color of the GridView just like in my case, I was told to set the border color of GridView to a particular color instead of the default black. What I did is simply use the BorderColor property of the GridView and set it declaratively like below: <asp:GridView ID="GridView1" runat="server" GridLines="Both" BorderColor="Red"><as... Here's how it looks when we run that one in the browser. Firefox 3.5 Safari 5 IE 8 Noticed that in IE8 ......

I decided to write this post because I always encounter this kind of issue so many times before at the forums. The main question is that they want to automatically calculate the totals when a user enter an amount from the TextBox control that is residing in the GridView template. So this example shows the basic way on how to achieve this with the server side manipulations. Note that this demo requires that you know the basics of ADO.NET and for binding a GridView control with data from database. ......

I was working with a project that uses the concept of master page. Within the master page I have a bunch of UserControls for some specific purposes and one of the UserControl is for the site dynamic menu. The menu was basically built using JQuery and CSS. The menu works fine if you are using it as an anonymous user but if you logged in as authorize user the menu will no longer work for some odd reasons and produces the following script error below in the browser: Message: Object expected Line: 122 ......

If you are working with GridView BoundField Columns and wanted to access the TextBox control on row editing for whatever reasons (which means when you click on the Edit link) then below is an example on how to do it. Let say for example you need to change the BackColor of the TextBox on edit mode. So at PreRender event of GridView, you can do something like this:protected void GridView1_PreRender(object sender, EventArgs e) { if (this.GridView1.EditIndex != -1) { TextBox tb = (TextBox)GridView1.Rows[Gri... ......

If you are working with iframe in which the content takes time to load, you may want to display a simple loading indicator to the end users instead of letting the users see a blank screen in the page. To do this, here's one way on how to implemet it using javascript. <html xmlns="http://www.w3.org/19... > <head runat="server"> <title></title> <script type="text/javascript"> function hideLoading() { document.getElementById('di... = "none"; document.getElementById('di... ......

Few months ago I've been seeing many users in the forums asking how to retain the selected tab in JQuery Tab across postbacks, so I've decided to write this post as reference to others who might encounter this kind of scenario. To describe the scenario, lets go a head and create the HTML mark up and construct the tabs. Here’s the markup below: <html xmlns="http://www.w3.org/19... > <head runat="server"> <title>JQuery Demo</title> <link href="jquery-ui-1.8.1.custo... ......

I was playing around with ASPNET AJAX MaskEditExtender control and ASPNET Validation controls when I was working with a profile page and doing some input validations. Everything seems to be fine until I was told to always retain the phone mask format in the TextBox. Here’s my code for Phone number masking: <asp:TextBox ID="TXTPhoneNumber" runat="server" MaxLength="13" ValidationGroup="GroupA" /> <asp:MaskedEditExtender ID="MaskedEditExtender1" runat="server" TargetControlID="TXTPhoneNu... ......

Recently, one of the members at forums.asp.net is asking how to highlight multiple dates in the ASP Calendar and make it selectable and make rest of the un-highlighted dates disabled. So I thought of sharing the solution that I have provided on that thread as a reference to others who might need it. Here's the code block below: C# public partial class _Default : System.Web.UI.Page { private List<DateTime> listDates; protected void Page_Load(object sender, EventArgs e) { //Suppose that you have ......

One of the members in the forum (forums.asp.net) is asking how to limit the number of selected items in the ListBox and so contributors (including me) gave the OP (Original Poster) different ideas on how to validate it. Some of them provided solution using pure JavaScripts and a mixture of code behind and JavaScript. However the OP doesn’t want to use JavaScript validation for some reason, so I decided to post the solution that I have provided on that thread as a reference to others. Here it is: ......

This example shows the basic way on how to access control from external javascript file (.js). Normally, we use the following line below when accessing control within our JavaScript method in the page. document.getElementById('&l... TextBox1.ClientID %>'); AFAIK, Using Inline expression like <% %> will not work within external js files. As a workaround we can pass the id of the control (eg. TextBox) to the funciton as a parameter instead like: External JS file: function GetControlValue(obj) ......